No worries, there are great resources online to help you on your journey. As a starting point, check out the Auckland Museum Online Cenotaph. This database includes a summary page for all soldiers that have served for New Zealand. 

On the Auckland Museum Online Cenotaph page for your person of interest scroll down to the "Sources" section and you will find a link to their digitised "Military personnel file". This link will take you to the Archives New Zealand website where you can find the individual service record for your soldier. These records have a wealth of information about where the soldier was from, their family and their involvement in the great war. Include on the soldier's "History Sheet" will be a section part war down indicateing which service medals they were awarded.

The 1914–15 Star was awarded for service in the British and Imperial forces in any theatre of the First World War against the Central European Powers during 1914 and 1915.

The medal is a four-pointed star ensigned with a crown. Imposed upon the star are two crossed gladii (swords) overlaid by a wreath of oak leaves, with the Royal Cypher of King George V at the base of the wreath and a central scroll inscribed "1914–15".

The British War Medal was awarded for service in the British and Imperial forces in the First World War to those who served for a prescribed period during the war, or who had died on active service before the completion of this period. 

The front of the medal depicts the bareheaded effigy of King George V facing left, with the legend "GEORGIVS V BRITT: OMN: REX ET IND: IMP:" (George V, King of all the British Isles and Emperor of India).

The reverse of the medal portrays Saint George naked on horseback and armed with a short sword, an allegory of the physical and mental strength which achieved victory over Prussianism. The horse tramples on the Prussian eagle shield and the emblems of death, a skull and cross-bones. In the background are ocean waves and just off-centre near the right upper rim is the risen sun of Victory. The years "1914" and "1918" appear on the perimeter in the left and right fields respectively.

The Victory Medal was awarded for service in the British and Imperial forces in any theatre of the First World War against the Central European Powers between 5 August 1914 and 11 November 1918.

The front of the medal portrays the winged figure of 'Victory' with her left arm extended and holding a palm branch in her right hand.

The reverse of the medal has the words "THE GREAT WAR FOR CIVILISATION 1914–1919" surrounded by a laurel wreath.